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/*
* The new sysinstall program.
*
* This is probably the last program in the `sysinstall' line - the next
* generation being essentially a complete rewrite.
*
* $Id: command.c,v 1.13 1995/12/07 10:33:33 peter Exp $
*
* Copyright (c) 1995
* Jordan Hubbard. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* verbatim and that no modifications are made prior to this
* point in the file.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY JORDAN HUBBARD ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL JORDAN HUBBARD OR HIS PETS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include "sysinstall.h"
#define MAX_NUM_COMMANDS 10
typedef struct {
char key[FILENAME_MAX];
struct {
enum { CMD_SHELL, CMD_FUNCTION } type;
void *ptr, *data;
} cmds[MAX_NUM_COMMANDS];
int ncmds;
} Command;
#define MAX_CMDS 200
static Command *commandStack[MAX_CMDS];
int numCommands;
/* Nuke the command stack */
void
command_clear(void)
{
int i, j;
for (i = 0; i < numCommands; i++)
for (j = 0; j < commandStack[i]->ncmds; j++)
if (commandStack[i]->cmds[j].type == CMD_SHELL)
free(commandStack[i]->cmds[j].ptr);
free(commandStack[i]);
numCommands = 0;
}
static void
addit(char *key, int type, void *cmd, void *data)
{
int i;
/* First, look for the key already present and add a command to it if found */
for (i = 0; i < numCommands; i++) {
if (!strcmp(commandStack[i]->key, key)) {
if (commandStack[i]->ncmds == MAX_NUM_COMMANDS)
msgFatal("More than %d commands stacked up behind %s??", MAX_NUM_COMMANDS, key);
commandStack[i]->cmds[commandStack[i]->ncmds].type = type;
commandStack[i]->cmds[commandStack[i]->ncmds].ptr = cmd;
commandStack[i]->cmds[commandStack[i]->ncmds].data = data;
++(commandStack[i]->ncmds);
return;
}
}
if (numCommands == MAX_CMDS)
msgFatal("More than %d commands accumulated??", MAX_CMDS);
/* If we fell to here, it's a new key */
commandStack[numCommands] = safe_malloc(sizeof(Command));
strcpy(commandStack[numCommands]->key, key);
commandStack[numCommands]->ncmds = 1;
commandStack[numCommands]->cmds[0].type = type;
commandStack[numCommands]->cmds[0].ptr = cmd;
commandStack[numCommands]->cmds[0].data = data;
++numCommands;
}
/* Add a shell command under a given key */
void
command_shell_add(char *key, char *fmt, ...)
{
va_list args;
char *cmd;
cmd = (char *)safe_malloc(256);
va_start(args, fmt);
vsnprintf(cmd, 256, fmt, args);
va_end(args);
addit(key, CMD_SHELL, cmd, NULL);
}
/* Add a shell command under a given key */
void
command_func_add(char *key, commandFunc func, void *data)
{
addit(key, CMD_FUNCTION, func, data);
}
static int
sort_compare(Command *p1, Command *p2)
{
if (!p1 && !p2)
return 0;
else if (!p1 && p2) /* NULL has a "greater" value for commands */
return 1;
else if (p1 && !p2)
return -1;
else
return strcmp(p1->key, p2->key);
}
void
command_sort(void)
{
int i, j;
commandStack[numCommands] = NULL;
/* Just do a crude bubble sort since the list is small */
for (i = 0; i < numCommands; i++) {
for (j = 0; j < numCommands; j++) {
if (sort_compare(commandStack[j], commandStack[j + 1]) > 0) {
Command *tmp = commandStack[j];
commandStack[j] = commandStack[j + 1];
commandStack[j + 1] = tmp;
}
}
}
}
/* Run all accumulated commands in sorted order */
void
command_execute(void)
{
int i, j, ret;
commandFunc func;
for (i = 0; i < numCommands; i++) {
for (j = 0; j < commandStack[i]->ncmds; j++) {
/* If it's a shell command, run system on it */
if (commandStack[i]->cmds[j].type == CMD_SHELL) {
msgNotify("Doing %s", commandStack[i]->cmds[j].ptr);
ret = vsystem((char *)commandStack[i]->cmds[j].ptr);
if (isDebug())
msgDebug("Command `%s' returns status %d\n", commandStack[i]->cmds[j].ptr, ret);
}
else {
/* It's a function pointer - call it with the key and the data */
func = (commandFunc)commandStack[i]->cmds[j].ptr;
if (isDebug())
msgDebug("%x: Execute(%s, %s)", func, commandStack[i]->key, commandStack[i]->cmds[j].data);
ret = (*func)(commandStack[i]->key, commandStack[i]->cmds[j].data);
if (isDebug())
msgDebug("Function @ %x returns status %d\n", commandStack[i]->cmds[j].ptr, ret);
}
}
}
}
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